One more try:
In my constructor function foo:
static void
foo(const v8::FunctionCallbackInfo<v8::Value>& args)
{
v8::Isolate* isolate = args.GetIsolate();
v8::HandleScope handleScope(isolate);
args.GetReturnValue().Set(
v8::Local<v8::Function>::Cast(args.This())->New(isolate,bar));
}
> var f = new Foo();
> f instanceof Foo;
false
Now if I change New to NewInstance, I get a crash from V8. I don't see why
an instance new'ed from the function still isn't "instanceof" the function.
Jane
On Wednesday, October 8, 2014 2:26:02 PM UTC-7, Ben Noordhuis wrote:
>
> On Wed, Oct 8, 2014 at 10:02 PM, Jane Chen <[email protected]
> <javascript:>> wrote:
> > I was able to get instanceof returning true following your tips.
> Thanks.
> > But it seems to me this design assumes that there is only a singleton
> > Function we are operating on as I'm always interacting with This, which
> is
> > the function returned from FunctionTemplate.GetFunction().
> >
> > If I want to dynamically create embedded objects from FunctionTemplates,
> is
> > there a way to keep them "instanceof" of a certain class?
>
> `o instanceof F` is more or less equivalent to recursively checking if
> `o.__proto__.constructor === F`. That is, you can make objects pass
> the instanceof test by making their constructors inherit from one
> another. For example:
>
> function A() {}
> function B() {}
> B.prototype = Object.create(A.prototype);
> (new B) instanceof A; // true
>
> You can accomplish the same thing with the C++ API in a number of
> ways. In your case, just FunctionTemplate::Inherit() might be enough.
>
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